Portable power unit



FIG. 1 is a perspective view of a portable power unit;

FIG. 2 is a left elevation view of the portable power unit of FIG. 1;

FIG. 3 is a right elevation view of the portable power unit of FIG. 1;

FIG. 4 is a front elevation view of the portable power unit of FIG. 1;

FIG. 5 is a rear elevation view of the portable power unit of FIG. 1;

FIG. 6 is a top plan view of the portable power unit of FIG. 1; and,

FIG. 7 is a bottom plan view of the portable power unit of FIG. 1.

In the drawings, the broken lines represent portions of the portable power unit which form no part of the claimed design. 

CLAIM The ornamental design for a portable power unit, as shown and described. 